Oil system elements of gearboxes PEAB 4456 / 4458 and PZAB 3541 — pump KSW-4, breather G1, ball valve 50, valves G1/2 and G1 1/4, oil level indicators

Technical specifications

Specifications are taken from the manufacturer’s technical documentation. Updated 11/09/2026.

Description

The oil system delivers oil to the gear meshes and bearings, filters and cools it, connects the gearbox cavity with the atmosphere and makes it possible to monitor the level. The pump PUMPE KSW-4 4804 works in the lubrication circuit. The breather PI0121 with a G1 connection lets the housing breathe when the oil temperature changes and holds back dust and moisture. The ball valve of size 50 in the two-component version (KUGELHAHN 50 2 KOMP) is intended for draining oil or shutting off sections of the oil line. The check valve GR4 with a G1 1/4 connection does not let oil flow back, and the 3/2-way directional valve with G1/2 switches the flows. The level indicator FSA-127-2.0 is 127 mm long. The G1, G1/2 and G1 1/4 threads are cylindrical pipe threads, so compatibility is visible already from the designation. The pump flow and pressure, filter capacity and valve pressure are not given in the source. The pump has number 1262652, the breather 644860, the ball valve 1151677, the check valve 1271054, the directional valve 1576902, the level indicator A5E36084951 and the sight glass A5E36085097.

How to choose

Select by designation and connection. The breather has G1, the directional valve G1/2, the check valve GR4 with G1 1/4, the ball valve size 50. All this is for the PEAB 4456,5 – PEAB 4458,1, and the sight glass only for the PZAB 3541. The pump flow, filter capacity and valve pressure must be requested by part number. For supply, the turbine specification and available upgrades are taken into account.